Method of manufacturing colored pressed articles



Patented Mar. 30, 1926.

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ammo LAUGKNEB, or mmnmmc, exams.

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Io'Drawlng. Applicatidii med April a, 1925; sw rm. 20,559. To all wlzom it may concern." --wl1ich it will be subjected in practical use. "Be it known that I, Bruno Lauoxmnz', a Theimproved method may be carried into citizen of the German Republic, and practice as follows: dent ofMarienberg, Saxony, Germany, have I .'.T,he articles to bemade from the mate-- 50" 5 invented a new Method of Manufacturing rial or substance or mass such as pulverulent Colored Pressed Articles, of which the folcelluloid-waste or casein or, b'ood, or the low' g-is a specification, d like, as 'alreadymentioned in the introduc- 'T e presentinvention relates to a method tory part of this specification, are first for the manufacture of patterned or decomoulde or shapedpreliminarily under a rated articles, 'suchas handles or grips, slight pressure, which, is so chosenthat the hatches for doors, electrical articlesof-use, respective color'or colors or lacquers, etc., knobs, counters or markers, knife-shells, and can enetrateinto the surface of that mathe like, and of coloring the respective arter ia or substance or mass.- Now-the color ticles,-which are to 'be'made, according to or lacquer is applied to thesurface of the 60 this invention, from materials employed article and ermitt'ed to penetrate therealready for similar purposes, but bein too into, wherea er the colored and 'atterned dense to permit the colors'to penetrate t cre- A or decorated article is subjecte to the into. I am aware of the fact that articles second or final pressing'operation which is -of the kinds stated b way. 0 example have carried through in such a manner that the. 85-

already been madeom plastic materials, density of the materiahete, becomes now such, for instance, "as casein, horn flour or that necessary for thelpractical use of the dust, blood, disintegrated. ceilulose-wa'ste, artlclemade One succeeds in this way to or the like. The respective articles have manufacture articles of the kind mentioned, been colored hitherto in this way that the and of similar or other 'kinds, which", as 70 2 respective colors or colored lacquers "have regards the durability or stableness of the beenapplied to the surface of the moulded color, areas durable or stable as'natural orpressed article -to be patterned or, decoproducts. rated with the aid of templates, the color I claim:

" being located, thereforegu n the surface of The method of manufacturing articles 75" the article andlbeing liab e to get off it if\ having a colored pattern or decoration from not adhering sufiicientl'y strongly to the ba'sclastic masses such as pulverulent celluloid, I I

' substance. ornflour or -dust,. or the like, which izon -The object of my invention'is to obviate sists in giving to' thea'rtic essentially its the just-mentioned drawback, and I attain final shape by apreliminary moulding or ;80 I

Lthis, object by subjecting the moulded or Y shaped article first to a -prelimini1ry. press ing operation, the respective material orsubstance being, at the time being, still in a thereinto and adhere firmly thereto; hereinafter the article, i. e. the now colored and patte'rnedor decorated article, is spbjected to another, thefinal ressure,which1sstrong enough to produce 1. at density the respective material or substance or inass must have in order "to beableto stand the strains to ing" said preiimma'ry moulding or shaping shaping process while subjecting: it to a relatively sli ht prcssure, t;hereuponapplying tlie'coloringsubstanccsto the then relatively soft surface of said article, and there-T 1 conditioninwhich the color can penetrate 'upon'subjecting'said article withthe color- 5 mg sutstances .app ied thereto to a further final pressing operation at a pressure which isgessentially higher than that applied dur -l process.

' BRUNQLAUCKNER. 

